nerve-cord

The whole vertebrate body, he considered, was composed of a longitudinal series of _morphological elements_, each of which was made up a section from each of the fundamental organs -- a vertebra, a section of the nerve-cord, and so on

Form and Function A Contribution to the History of Animal Morphology

The cerebral ganglion was formed by the ends of the nerve-cord growing up round the oesophagus and fusing with the paired "sense-plates" which develop from the ectoderm of the head.

Form and Function A Contribution to the History of Animal Morphology

In the thoracic region of Crustacea it is not the whole segment with part of the carapace which corresponds to a vertebra, but merely the part round the ventral nerve-cord (endophragmal skeleton).

Form and Function A Contribution to the History of Animal Morphology

Annelids by the "giant-fibres" or neurochordal strands which lie close above the nerve-cord, a view held by Kowalevsky, [414] and for a time by

Form and Function A Contribution to the History of Animal Morphology

He succeeds in showing -- to his own satisfaction at least -- that in the formation of new segments in _Nais_ and _Chætogaster_ a strand of cells appears between the alimentary canal and the nerve-cord, and that from this axial strand the hæmal muscle-plates grow out dorsally round the alimentary canal and the neural muscle-plates ventrally round the nerve-cord (see Fig. 14).

Form and Function A Contribution to the History of Animal Morphology

A streak or groove forms along its axis, and becomes the nerve-cord running along the back.

The World's Greatest Books — Volume 15 — Science Various 1909

The brain is at first a bulbous expansion of the spinal nerve-cord.

The World's Greatest Books — Volume 15 — Science Various 1909

More than seventy years ago, Newport (1839) traced the rapid but continuous changes, which, during the early pupal period, convert the elongate nerve-cord of the caterpillar with its relatively far-separated ganglia into the shortened, condensed nerve-cord of the Tortoise-shell butterfly (_Vanessa urticae_) with several of the ganglia coalesced.

The Life-Story of Insects 1902

The sensory nerve-fibre branches in the nerve-cord.

The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told J. Arthur Thomson 1897

Certain sensory nerve-cells in the earthworm's skin are stimulated by vibrations in the earth; the message travels down a sensory nerve-fibre from each of the stimulated cells and enters the nerve-cord.

The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told J. Arthur Thomson 1897